Rotary discharging apparatus.



J. J. POWER.

ROTARY DISGHARGING APPARATUS.

APPLICATION FILED FEB.23,1911.

icy,

J. J. POWER.

' ROTARY DISGHARGING APPARATUS.

APPLIQATION FILED 1133.23,}911. 1,033,929. Patented July 30, 1912.

2 SHEETS-SHEET 2.

UNITED STATES PATEN T OFFICE.

JEFFREY J. PGWER, F MADISON WISCONSIN, ASSIGNGR (3F ONE-HALF T0 LE BOY W.

STEVENS, OF CHICAGO, ILLINOIS. I

BQTARY DISGHABGING APPARATUS.

Application its February 22, zen.

Specification of Letters Fatczzt.

Patented July 30, 1912. Serial No. 610,269.

To all whom it may conce i:

Be it known that I, fnrrnsr i Pownn, a citizen of the United States, residing at the city of Madison, county of Dane, and State of li isconsin, have invented new and useful Improvements in Rotary Discharging Appnrrzis, of which the following is a specification. I

My invention relates to improvements in rotary discharging apparatus, with pnrticular reference to that class of apparatus shown and described in my former patent, dated September th, 1905. and numbered 798,699, Z'B-iSSUGd May 21st, 1907, and num- In such apparatus, the prinhered 12.655. ciple of operation (litters materially from that of ordinary suction fans wherein air end other material,

and other material are drawn in at the'eye, and move-d outwardly nndcircnlai'ly hy fan Wings to an outlet through which theeir which has acquired suflicient velocity in rotation, is expelled by centrifugal force. In the device shown and dcscrihcd in my to mer patent, the material enters-n casing Within which are located a set of reyolving Wings, similar in form to those employed in suction fans, but such nndcriuls, (air and other material), instead of being carried around and discharged by centrifugal force. are delivered into the path of the wings in such a manner as to he struck and halted directly into and through the discharge chute.

The ohjcct of the present invention is to increase the etiicicncy of the machine de' scribed in my patent, shove referred to, I having discovered tint its cfliciency is not limited to the capacity of a single inlet of maximum .printticnl size.

in the t'ollowiiig,;-(les :ription. reference is had to the accompanyingdrawings, in Which i I Figure l is a side view or" fl dischsrging chute, embodying my invention. with the casing shown in section on a plane cutting the axis of ihe discharge chute. Fig. 2 is a sectional View. drawn to a plane cutting the axis of the inlet openings and feed-ways. Fig. 3 is a plan view. showing my invention pro-sided with two inlet feed-ways, the latter being initially hrolien away. Fig. 4 is at side elevation (if the some, showing the inlet feednvnys .ii'ition. Fig. 5 a View sinii lsr to Fix; io'wingn modified form of nation. Fig. (3 is an elevai'ced-ivay constr lures l2 and 1%, and each of the tion of the apparatus shown in Fi portions of the casing walls partial away.

Like parts are identified by the some reference characters throughout the several views.

1 is sensing having a generally cylindrical fornfwith a slight eccentric enlargement or extension of its peripheral wall on the side 1 along which the discharging Wings move in approaching the outlet or discharge chute 2, said chute extending tangentially from the periphery of the casing. A supporting shaft 3 extends through hearings 4: in one side wall of the casing, and is provided within the casing with a disk 5, which is rigidly secured to-the shaft by a set-screwfi or in any other convenient manner. One-face of the disk 5 is provided with projections 8, having radial apertures or sockets in which Wing shanks 9 are adapted to fit. The shanks 9 may be adjusted radiully in thesockets and secured in any desired position of adjustment by screws 10. Discharging wings 11 are rigidly secured to the shanks 9. The Walls of the casing ill e provided with a plurality of inlet apertures. Four of said apertures are illustrated in Fig. 2 at l2, l3, l4 and 15 respectively. These inlet apertures are located in the side walls of the casing between the axis of shaft- 3 and circles in the respective side walls of the casing parallel with the enter circle of win rotation. The apertures 12 and 14 are also, substantially in line with the sides of the lower end oi the discharge chute 2, whereby air and other material entering the casing through these apertures 12 or 14 may he struck by. the Wings 1'1 and thrown through the chute 2. The apertures 13 and 15 are located on the opposite side of the axis of the shaft 3 from that occupied by the aperapertures is prcierahly so formed that the marginal Wall of the casing will be curved on the outer side and straight on the inner side, substantially shown. The apertures are also of such dimensions that the cent sl portion of the casing, atand surrounding the axis of the shaft will be closed. I prefer to have 105 the entire central portion of the sides of the casing closed within a circle having a diameter nearly equal to that described by the inner margins of the Wings 11,. but exact (,liinensions are not essential. I also prefer 5, with y broken or openings is carried around and thrown to locate the upper inlet-a-pertures'13 and with the larger portions to the front of the vertical plane of shaft 3, and the openings 12 and 14 with't-he larger portions to the rear of said plane, 2 6. toward the side where the discharge chute 2 is located. The a1r or other material is delivered to the casing through feed-ways 20, which preferably extend outwardly in the form of a trough from the curved margins of the respective apertures, and the'bottom of each trough inclines longitudinally in the direction'of the line of the shaft axis as the distance m rear side,=viz: that side which connects with above described is, =as set forth in my the interior of the casing at a point toward which the wings travel in passing the opening through which the trough feeds.

The effect oLthe feed-ways or troughs former patent) 'to sit up a cyclonic whirl inthe air'ddi vered' hrough the trou n to 1he.interior; .-.of,the casing, the air elng to'rhtate spirally in a direction oppo? site that of wing rotation, and progressively jnto the casing at an angle which causes the" iapex of the whirlin current to enter the casing underneatht eshield 21,"whereby the air is projected at an -angle against the advancing faces. of the wings 11. 'I' have discovered that the peculiar form of the trough, as above described, is not essential to the development of the whirling or cyclonic current of air in the feed-way, although it is'a contributing" factor of considerable importance. It is possible, however, to take the air in at the outer end of the feed-way and to secure a similar cyclonic whirl in the air current. I have also discovered that the capacity of the wings 11, for delivery of .air through .the chute 2, is

not limited by the amount of air entering through a single feed-way of maximum practical size, but that by providing a similar feed-way on thefopposite side of the shaft axis, the capacity of the device for air delivery may be very largely increased without any material additional expenditure of power. This appears to be due to the fact that, in the construction shown and de-- scribed in my former patent, a vacuum was created in the upper portion of the casing, thus causing a suction which required a certain portion of the applied power to overcome. By providing auxiliary inlets on opposite sides of the shaft-axis, the vacuum in the upper part of the casing is relieved and the air entering through the upper opening out through the discharge chute by centrifw gal force, and this does not appearto mterfere to any appreciable extent with the ca-. p'acity of the wings 11, to bat ai'r through the .dischar e chute which enters through the lowereed-opening or openings, but

owing to the centrifugal pressure of the air which enters through the upper" inlets, it is desirable to enlarge the peripheral wall of the casing, as shown at 1, in order to .re-

duce the frictional pressure. I have-found also that the longitudinal inclination of the shaft axis as it'approaches the inlet,'isar 'outer or curved wall of the feed-way, wherefactor in securing the best results inthede? velopment of the cyclonic'whirl in'the air' current, and I am, therefore, enabled to uti -l;

lize this characteristic of my formerly pat; ented inventionin-providinlg a. discharging apparatus which is specia y adaptedfor' use as a vacuum cleaning apparatus capable of producing an intense suction at .an endinlet commonto a plurality offfeedeways." Thismodification'of my invention is anus;

trated in Figs. 5 and 6, wherein the fan, casing 1 is provided with a plurality of in let apertures 25 and26 of substantially the)" same form as the-apertures Illustrated in;-

Figs. 1 and 2, although slightly larger. "In this construction both apertures are encir t cled by a feed-way wall 27 which extends outwardly from the fan casing and tapers to an elongated slot or elliptical opening at 2 8. VVhere the wall 27 connects with the casing it is si'lbsta'ntiallyr cylindrical inform,

as shown in Fig. 5. The sides areflatt'ened in the direction ofthe straight margins of g the apertures 25 and 26, and from these margins of the apertures a partition 30 extends outwardly and tapers to a wedge-shaped extremity at 31 in Y line with the elongated the opening 28 isdivided bythe partition 30 opening at 28. With this construction it will be observed that air entering through and delivered into two feed-way cavities or I passages 32 'and 33, leading to the inlets 25. and 26 respectively. The air delivered. through the casing inlet 25 will be batted out through the discharge chute 2, while that entering through the .inlet 26 will be car ried around by centrifugal force and throwh' out through the-discharge chute. The air delivered by centrifugal force and which en-- ters through the opening '26,"(the openings 13 and 15 'in Fig. 2) will be, to a large ex tent, beyond t-heran'ge of the air current: I

entering through the opening or openings nearest tothe discharge chute, since it will i have moved outwardly by centrifugal force during the revolution of the wing from one opening to-the next. There is, therefore}: little interference between the tw'o'volumes of air, and apparently that air which is batted out through the chute is delivered in,

v advance of the air thrown out by centrifw gal 'force, so that the capacity of the dischargechute does not require to be greatly enlarged over that required for apparatus having but a'single inlet aperture. 7 ere my invention is used merely for the "dellvery of air, it may be provided with more than two inlets and more than two feed-ways,

- four feed-.pyays and inlets being illustrated in m Fig. 2. As illustrated in Figs. 5 and 6, I may arrange two feed'ways with a common inlet at the end' so that the apparatus may be adjusted with the wings revolving in a horizontal plane, and the feed-way inlet 28 5 adjusted in proximity to a surface to be cleaned. In any event, the apparatus as herein described delivers air or other material partly by centrifugal action and partly by abatting action, as above set forth. While I have described the air entering the apertures most distant from the outlet or discharge chute, as'being delivered by centrifugal force, I find that to secure the best results, feed-ways of trough shape should be used for all the inlets, in order to cause the I air to whirl and become concentrated before entering the fan casing, but such troughs may be 0 en to the exterior only at the end if desired 0 Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a device of the described class, the

' combination of an inclosing casing provided with a peripheral discharge aperture, a set of revolving wings in said casing, a feed way leading to an aperture in the casing between its periphery and the axis of wing rotation in a position to deliver material into 0 the path of the wings as theyapproach said discharge aperture, and another feed way leading to an aperture in the casing between its periphery and the axis of wing rotation at a greater distance from the discharge aperture than the point of delivery through the first mentioned feed way, whereby the material entering through the first mentioned feed way may be batted through the discharge aperture and the material entering through the other feed way, may be carried around and delivered'throughthe discharge aperture by centrifugal force.

2. In a device of the described class, the.

combination of an'inclosing casing provided with a peripheral tangential discharge 'aper ture, a set of revolving wings msaid casing adapted to deliver air and otherf material through said aperture by-centrifugal force, and a plurality of inlet apertures in the side Wall of said casing, one of said apertures :ommunicating with a laterally extending i eed way and being located substantially .ipposite the axis of the discharge chute proected into the casing and, the other of said *pertures being more distant therefrom.

3. In a device'of the described class, the combination of a set of revolving wings, an inclosing casin therefor provided with a plurality of in et-s and having a discharge aperture in a position to permit a tangential 7 deliver of material carried by the win and a eed way leadin to an aperture in t e casing between its periphery and the axis of wing rotation, 'andhaving walls rmitting the development of a cyclonic w irl in the air entering through said feed way, said feed way being also arranged to deliver material through one of said inlets into the path of the wings as they approach said discharge aperture, and another of said ing lets being adapted to admit air into the path of the wings at apoint sufficiently distant from the discharge aperture topermitthe development of centrifu al force in such sir before reaching the disc arge aperture. 35

4. In a device of th described class, the combination of an inclosing casin provided with a discharge aperture, and aving a plurality of inlet apertures between its periphery and ;'the axis of wing rotation, a partition wall extending outwardly from the casing between the inlet apertures, and feed way walls encircling the partition wall and forming, with the latter, a plurality of passage ways leading to the inlet apertures of 96 the casing.

In a device of the described class, the combinatfim of an inclosing casing provided with a discharge aperture, and having. a plurality of inlet apertures between its periphery and the axis of wing rotation, a par- .tition wall extending outwardly from the casing between the inlet apertures, and feed way walls encircling-the partition wall and forming, with the latter, a plurality-of passage ways leading to, the inlet apertures of the casing, :said feed way being closed except at its outer end beyond the partition.

6. In a device of the described class, the combination of an inclosing casing provided with a discharge aperture, andhaving .a plurality of inlet aperturesbetween its pe-' riphery' and the axis of wing rotation, a par-v tition wall extending outwardly from the casing between the inlet apertures, and feed 11.5 way walls encircling the partition wall and" forming, with the latter," a plurality of passage ways leading to the inlet aperturespof the casing, said feed way walls converging outwardly to an elongated end opening sub: 2 stantially in the plane of and beyond said; partition.

7. In a device of the described class, the combination of an inclosing casing provided with a discharge aperture, and having a plurality of inlet apertures between its pe-' riphery and the axis of wing rotation, a par-' tition wall extending outwardly from the casin between the inlet apertures and feed way wallsencircling the partition wall and 130 forming, with the latter, a plurality of pasline with the path of the material through A sage'ways leadin to'the inlet apertures of the dischargelaperture. I v the casing, said eed way walls converging In testimony whereof I aflix my signature outwardly to an elongated end 0 enin sub in the presence of two' witnesses. stantially in the' fflane of and eyon said JEFFREY J. POWER. partition,0ne 0 said feed ways being 'Witnesses:

. .ada ted for the delivery of air into the path IRMA D. BREMER,-

of t e fan wings at a pointsubstantially in LEvE m'rr C. Wunxuml 

